function proDownImage(ImgD){
	var proMaxHeight = 150;
	var proMaxWidth = 110;
	var image = new Image();
	image.src = ImgD.src;
	if(image.width>0&&image.height>0){
		var rate = (proMaxWidth/image.width < proMaxHeight/image.height)?proMaxWidth/image.width:proMaxHeight/image.height;
		if(rate<1){
			ImgD.width = image.width*rate;
			ImgD.height = image.height*rate;
		}else{
			ImgD.width = image.width;
			ImgD.height = image.height;
		}
	}
}